Abstract
Education that we can say study is a process of learning something. the objectives of the study are : To find out the influence of the formal education to the students' achievement in English at SMA Swasta Riama Medan, To find out the influence of Non-Formal education to the students' achievement in English at SMA Swasta Riama Medan, To find out the difference of the students achivement in English berween formal education and non-formal at SMA Swasta Riama Medan. From the research, the writer concludes that there is difference between formal education and non formal education to the students' achivement especially in learning English.